Treadmill exerciser



FIG. 1 is a perspective view of a treadmill exerciser showing my design;

FIG. 2 is a top plan view;

FIG. 3 is a bottom plan view;

FIG. 4 is a right side elevational view, the left side elevational view;

FIG. 5 is a front elevational view;

FIG. 6 is a rear elevational view; 

The ornamental design for a treadmill exerciser, as shown and described. 